Chair



FIG. 1 is a front perspective view of a chair showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view, the opposite side being a mirror image thereof; and,

FIG. 4 is a back view.

The objects shown in dotted lines depict environment and form no part of the claimed design. 

CLAIM The ornamental design for a chair, as shown and described. 